package com.qf.service.impl;

import com.qf.pojo.User;
import com.qf.service.UserService;

import java.util.ArrayList;
import java.util.List;

/*
 *@Description:
 *@author:刘哥
 *@Date:14:16 2022/7/11
 */
public class UserServiceImpl implements UserService {

    @Override
    public List<User> queryUsers() {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("queryUser");
        int i=10/0;
        return new ArrayList<>();
    }

    @Override
    public Integer updateUser(User user) {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("update User");
//        if(1==1) {
//            throw new NullPointerException("test 空指针");
//        }
        return 1;
    }

    @Override
    public Integer saveUser(User user) {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("Save User");
        return 1;
    }

    @Override
    public Integer deleteUser(Integer id) {
//        System.out.println("事务控制");
//        System.out.println("日志打印");
        System.out.println("delete User");
        return 1;
    }
}
